Not a whole lot of great RV park options in Las Vegas. However we enjoyed our stay at Las Vegas RV Resort.
We stayed here for 5 days. When we first got there and checked in they put us in a very small spot for our 26' travel trailer. They have someone who guides you to your site and helps you park it. Took a bit of back and worth just to get it to fit without hitting anything.
However ultimately I decided that spot was just too small for our setup so I went to the office and told them and the nice lady quickly moved us to another much larger and nicer spot right across from the small one. This one had plenty of space for our RV and truck. It was right across from the pool and laundry and had plenty of space for chairs BBQ etc.
They also have 3 large dog runs where you can let your dogs off leash which is always nice. Although they were usually full of dogs as it's a huge park.
The pool was nice and clean (although again usually full of people) and although we only went once we really enjoyed it. I do wish the hottub was not as hot as it was especially when it's 100 degrees outside.
Wifi was hit or miss. Overall it was a nice park and we would stay again.